“Stypi is a realtime editor that allows multiple users to make changes to a single document at the same time. All you need to do is share the URL with others to begin collaborating!

This editor also supports programming languages that you can access by clicking on the “</>” button on the top left. For more information on how to use Stypi please click the FAQ link on the bottom left.” (source)

In short: fork the repo you want to contribute to; clone it to your local machine; do the changes, commit, then push it back to your repo. Then create the pull request on the web interface of github: visit your repo and click on the “pull request” button. Fill out the necessary information and create the pull request. The project’s owner will be notified about your contribution.

So far I’ve used gparted to get info about partitions. But today I found another tool that is shipped with Ubuntu called GNOME Disk Utility. It is also good for getting info but it can do some extra stuff too: create images, mount/unmount partitions, etc.

You can launch it with the “gnome-disks” command in the terminal. Or, just type “Disks” in the unity dash.